Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell three can hold a maximum of eight electrons. 0 0. As you learn about elements with more than eighteen electrons you will find that shell three can hold more than eight. Since the 3s if now full we'll move to the 3p where we'll place the remaining six electrons. Share 4. All noble gases have p orbitals (and energy layers) full of electrons. It has five electrons in its outer shell, most of its compounds are trivalent. Explain that argon has 18 protons and 18 electrons. In fact, the number of valence electrons goes up by one for each step across a period until the last element is reached. Argon is a noble gas with electronic configuration of [Ne] 3s2 3p6. Argon Atomic Number. The electronic configuration of anions is assigned by adding electrons according to Aufbau's building up principle. There are 2 electrons on the first energy level, 8 electrons on the second level, and 8 electrons on the third energy level. argon has … Asked 10/14/2016 9:05:18 AM. 4 years ago. * Electron configuration: [Ne] 3(s(2)) 3(p(6)). Rate! On the periodic table, argon's atomic number is 18. Thanks Comments; Report Log in to add a comment Looking for something else? Your welcome! We are suppose to do:-An isotope of that atom-An ion of that atom, with a positive charge. Also mention the quantum numbers of the valence electron. :) … Because the third energy level has eight electrons and is therefore full (3s 2 3p 6) it is called a noble gas. So, Argon-40 would seem to be: 18 electrons which requires 18 protons and 22 neutrons. If neutral, there would have to be 18 protons for the 18 electrons. That means there are 18 electrons in an argon atom. Nitrogen makes up DNA both in the form of nitrogen bases and in neurotransmitters. a)1 b)6 c)4 d)2 answer:4 can you explain this answer ? You'll also have 83 argon atoms, and 667 calcium atoms. s. Log in for more information. It is mostly Argon-40; small amts. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and eight in shell three. How many valence electrons does nitrogen have? So, it has 3 electron shells, and that will be its valence shell. Proton is, I think, 1.0078252 amu. Since the outer shell electrons are fully filled, argon have no tendency to gain nor lose electrons. Before 1962, argon and the other noble gases were considered to be chemically inert and unable to form compounds; however, compounds of the heavier noble gases have since been synthesized. You must recognize that the second principal energy level consists of both the \(2s\) and the \(2p\) sublevels and so the answer is three. For example, Argon [Atomic #18] has 8 valence electrons so it is considered to have a full M shell. 40-18 is 22. The protons and electrons cancel each other out because protons produce a positive charge, electrons a negative charge, and they have the same amount. A. argon (Ar) B. silicon (Si) C. potassium (K) D. magnesium (Mg) C. 14 D. 28 Silicon (Si) has 4 valence electrons. How many valence electrons does silicon (Si) have? The relative atomic masses of two isotopes of an element are 15.9936 and 17.0036 amu. Argon's complete octet of electrons indicates full s and p subshells. Neutrons do not have a net electric charge, so the number of neutrons does not matter in the calculation. Ask your question. The electron configuration for Ca 2+ is the same as that for Argon, which has 18 electrons. If I take a sample and measure an argon to potassium ratio of 83:250, I know that this sample is 2.4 billion years old. Add your answer and earn points. The real-world implications of this is that noble gases have no shareable electrons. Rather like a puzzle box containing exactly the right number of pieces, argon and its five cousins does not have any subatomic shortages that need to be amended by donations from other elements, and it doesn't have any extras floating around to donate in turn. This means that if you have 1000 atoms of 40 K, 1.2 billion years later you'll have 500, and 1.2 billion years after that you'll have 250. If there are more electrons than a shell can hold, a new shell starts. of -36 and -38. i need to know the number of protons,neutrons,and electrons the element argon has. Brainly User Brainly User Neutrons:22 Electrons:18 Still have questions? 5 years ago . Find more answers. Nitrogen has either 3 or 5 valence electrons and is on the periodic table at the top of Group 15. Calculate (A) the number of electrons (B) number of protons (C) number of neutrons(D) mass number. How many core electrons does argon have? Still have questions? We will abbreviate chlorine by using the neon core. How many valence electrons does Argon (Ar) have? 2 Answers/Comments. Protons are particles in the nucleus of an atom that have a positive charge equal to +1. Therefore, argon has no electric charge (as with other elements). Choose one answer. Oxygen is found in the sixth group, therefore it has six valence electrons. Get an answer. The KLMN electron configuration of Argon is 2, 8, 8 each number referring to the electrons in the shells or energy levels of the atom. Neon, with its configuration ending in \(2s^2 2p^6\), has eight valence electrons. Ask your question. 1 See answer pi5lbibaysSwimg is waiting for your help. A cation carries a positive charge and has more protons than electrons. | EduRev JEE Question is disucussed on EduRev Study Group by 513 JEE Students. Lv 4. Therefore the Argon electron configuration will be 1s 2 2s 2 2p 6 3s 2 3p 6. In one atom of argon is 1s22s22p63s23p6 in the sixth group, therefore it has six valence electrons or! 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